The flow of woody biomass to end users is determined by economic
factors, especially the amount available across a landscape and
delivery costs of bioenergy facilities. The objective of this
study develop methodology to quantify landscape-level stocks
and potential biomass flows using the currently available spatial
database road network analysis tool. We applied this methodology
to a landscape of approximately 15 million acres around city
Roseburg in southwestern Oregon. The analysis allows us produce
isocost contour maps that display supply areas delineated by
specific cost thresholds, as well as estimates of the amount
of feedstock that can be delivered sites on an annual basis for
specified haul cost. This methodology has the potential of providing
useful information for determining the economically efficient
scale and optimal location of a woody biomass utilization facility.